How to disconnect the database connection using crystal report

Post Author: cp_pramodu
CA Forum: Crystal Reports
Hi All,
We have developed an application using .Net and Crystal Reports 10 for generating Adhoc reports from Business system (db sybase 12). We are using the below mentioned script for opening rpt files.
Try
       ReportDocument1.Load(sReportName)
       For Each table In ReportDocument1.Database.Tables
              ' Get the TableLogOnInfo object.
              logonInfo = table.LogOnInfo
              ' Set the server or ODBC data source name, database name,
              ' user ID, and password.
              logonInfo.ConnectionInfo.ServerName = sReportServerName
              logonInfo.ConnectionInfo.DatabaseName = DBName
              logonInfo.ConnectionInfo.UserID = UserName
              logonInfo.ConnectionInfo.Password = Password
              ' Apply the connection information to the table.
             table.ApplyLogOnInfo(logonInfo)
Next
'Me.Cursor = Cursors.WaitCursor
Me.CrystalReportViewer1.ReportSource = ReportDocument1
'Me.Cursor = Cursors.Default
Catch ex As Exception
'Response.Write(ex.Message)
Finally
Me.Cursor = Cursors.Default
'ReportDocument1.Close()
'ReportDocument1.Dispose()
End Try
Each time user opens the report a new connection is established to the database, can we disconnect the connection established from crystal reports, while closing crystal report. At the same time i want to setup an Idle time for these connections. In database level, i will not be able to set idle time in database level, as it affect our electronic channels.
Waiting for a reply.
Thanks & Regards,
Pramodu. C. P

Hi,
If you are reworking the application can you not build in the functionality to re-establish a connection if there is a failure? That is, a submission from the application server to the database server detects a failure, etc. and then re-establishes the connection. If you need a more frequent check than during a user-initiated roundtrip, you may be best served by using the "dummy query" technique on some time interval.
From my understanding using HA Event Notification would require a RAC database (plus a multi-threaded application and services correctly configured on the RAC-side).
In the documentation I see this:
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14250/oci09adv.htm#sthref1495
"Applications must connect to a RAC instance to enable HA event notification."
In any case, this has the potential to be a bit complicated...
Regards,
Mark

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